/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * File Name          : freertos.c
  * Description        : Code for freertos applications
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "FreeRTOS.h"
#include "task.h"
#include "main.h"
#include "cmsis_os.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "semphr.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN Variables */

/* USER CODE END Variables */
/* Definitions for Task_CheckIn */
osThreadId_t Task_CheckInHandle;
const osThreadAttr_t Task_CheckIn_attributes = {
  .name = "Task_CheckIn",
  .stack_size = 128 * 4,
  .priority = (osPriority_t) osPriorityNormal,
};
/* Definitions for Sem_Tables */
osSemaphoreId_t Sem_TablesHandle;
const osSemaphoreAttr_t Sem_Tables_attributes = {
  .name = "Sem_Tables"
};

/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN FunctionPrototypes */

/* USER CODE END FunctionPrototypes */

void AppTask_CheckIn(void *argument);

void MX_FREERTOS_Init(void); /* (MISRA C 2004 rule 8.1) */

/**
  * @brief  FreeRTOS initialization
  * @param  None
  * @retval None
  */
void MX_FREERTOS_Init(void) {
  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* USER CODE BEGIN RTOS_MUTEX */
  /* add mutexes, ... */
  /* USER CODE END RTOS_MUTEX */

  /* Create the semaphores(s) */
  /* creation of Sem_Tables */
  Sem_TablesHandle = osSemaphoreNew(5, 0, &Sem_Tables_attributes);

  /* USER CODE BEGIN RTOS_SEMAPHORES */
  /* add semaphores, ... */
  /* USER CODE END RTOS_SEMAPHORES */

  /* USER CODE BEGIN RTOS_TIMERS */
  /* start timers, add new ones, ... */
  /* USER CODE END RTOS_TIMERS */

  /* USER CODE BEGIN RTOS_QUEUES */
  /* add queues, ... */
  /* USER CODE END RTOS_QUEUES */

  /* Create the thread(s) */
  /* creation of Task_CheckIn */
  Task_CheckInHandle = osThreadNew(AppTask_CheckIn, NULL, &Task_CheckIn_attributes);

  /* USER CODE BEGIN RTOS_THREADS */
  /* add threads, ... */
  /* USER CODE END RTOS_THREADS */

  /* USER CODE BEGIN RTOS_EVENTS */
  /* add events, ... */
  /* USER CODE END RTOS_EVENTS */

}

/* USER CODE BEGIN Header_AppTask_CheckIn */
/**
  * @brief  Function implementing the Task_CheckIn thread.
  * @param  argument: Not used
  * @retval None
  */
/* USER CODE END Header_AppTask_CheckIn */
void AppTask_CheckIn(void *argument)
{
  /* USER CODE BEGIN AppTask_CheckIn */
    uint8_t temp_str[30];
    sprintf(temp_str, "Total tables = %d", uxSemaphoreGetCount(Sem_TablesHandle));
//    printf("Total tables: %d\n", uxSemaphoreGetCount(Sem_TablesHandle));
    HAL_UART_Transmit(&huart1, temp_str, sizeof(temp_str), 500);
  /* Infinite loop */
  for(;;)
  {
      // 检查按键是否被按下（GPIO_PIN_RESET表示按键按下）
      if(HAL_GPIO_ReadPin(KEY_GPIO_Port, KEY_Pin) == GPIO_PIN_RESET) {
          vTaskDelay(pdMS_TO_TICKS(20)); // 延时20毫秒，防止按键抖动
          // 尝试获取一个桌子信号量，等待时间100毫秒
          if(xSemaphoreTake(Sem_TablesHandle, pdMS_TO_TICKS(100)) == pdTRUE) {
              // 如果成功获取到桌子信号量，打印"Table taken"
              HAL_UART_Transmit(&huart1, (uint8_t*)"Table taken\n", 12, 0xFFFF);
          } else {
              // 如果未能获取到桌子信号量，打印"Table not taken"
              printf("Table not taken\n");
          }
          vTaskDelay(pdMS_TO_TICKS(300)); // 延时300毫秒
      }
//      printf("Available tables = %d", uxSemaphoreGetCount(Sem_TablesHandle)); // 打印当前可用的桌子数量
//      HAL_UART_Transmit(&huart1, (uint8_t*)"Available tables = %d\n", 20, 0xFFFF);
    // 延时10毫秒
    vTaskDelay(pdMS_TO_TICKS(10));
  }
  /* USER CODE END AppTask_CheckIn */
}

/* Private application code --------------------------------------------------*/
/* USER CODE BEGIN Application */
// 定义一个回调函数，当RTC（实时时钟）的唤醒定时器事件发生时调用
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc) {
    // 定义一个变量，用于记录是否有高优先级的任务被唤醒
    BaseType_t highTaskWoken = pdFALSE;
    // 检查信号量Sem_TablesHandle是否已经被创建
    if(Sem_TablesHandle != NULL) {
        // 从中断服务程序中释放信号量Sem_TablesHandle
        xSemaphoreGiveFromISR(Sem_TablesHandle, &highTaskWoken);
        // 如果有高优先级的任务被唤醒，则请求上下文切换
        portYIELD_FROM_ISR(highTaskWoken);
    }
}
/* USER CODE END Application */

